Katarte

Taught on a board. Asked again in 3 days. Photograph a problem you're stuck on and a senpai — an older student — teaches it, writing on a board as they go. Equations, calculations and figures are written, not spoken; the voice only asks: "Look at D here. It's positive, right? So?" The lesson ends when you tap "Got it" — never before. ■ Three days later, one review question When you tap "Got it", one review question is made from that board and sent to you as a notification 3 days and 7 days later. You answer in text; your senpai marks it correct, incorrect, or couldn't-read, and anything you got wrong comes back the next day. Feeling that you understood a worked solution and being able to solve it yourself three days later are two different things — the question exists to tell them apart. ■ Three steps 1. Photograph the problem, with your notes if you have them, so your senpai can see how far you got. Stuck from the start? The problem alone is fine 2. Your senpai teaches it on the board. Ask back whenever something is unclear; "I can't explain this yet" is always one tap away 3. Tap "Got it". In 3 days, a review question from that board arrives Equations are never read aloud: a spoken formula does not stay in your head. Staying quiet while writing is how a real tutor works. ■ No scores We count days in a row and problems solved — nothing else. No accuracy rate, no ranking, no screen that compares you with anyone. A wrong answer is never held against you; the question simply comes back tomorrow. ■ Four promises 1. We teach; you decide when you're done. Your senpai checks in along the way, but only "Got it" ends the lesson 2. No scores. Days in a row and problems solved, nothing else 3. Mistakes are never shameful. A wrong answer only changes when the question returns 4. No pressure. Notifications and upgrade prompts are never commands or nagging ■ Behind it Spaced repetition — remembering something just as you start to forget it — written as a check-back from your senpai rather than a nag. ■ Scope - Subjects: high school mathematics (Algebra 1 / Geometry / Algebra 2 / Precalculus / Calculus / Statistics). In Japanese, junior-high and high-school mathematics and English on the Japanese curriculum - Languages: English and Japanese - What you need: a camera (the problem and your notes) and a microphone (talking with your senpai), requested only right before use - No account, no sign-in, no email address — just an anonymous device ID ■ Pricing Free — one lesson a day from your senpai, plus the review questions made from it (3 and 7 days later) Premium — several lessons a day, your review history, calling your senpai back by voice on a gap, and a study plan with your senpai ■ Photos and audio Photos of your notes and transcripts of your conversations are stored to run the lesson and build your review questions. They are tied to an anonymous device ID; we never collect your name or email. No ads, no cross-service tracking. They are also used to find unclear or wrong explanations and improve the service; you can ask us to stop or delete through the support page. ■ Your senpai can be wrong It can. The board stays on screen, so compare it with your textbook before you tap "Got it". Anything that felt wrong can be reported from Settings. ■ About the subscription - Title: Katarute Premium - Length and price: 1 week $6.99 / 1 month $19.99 / 1 year $199.99 (auto-renewing) - Payment is charged to your Apple ID account at confirmation of purchase. - The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. - Manage or cancel in Settings > Apple ID > Subscriptions. - Terms of Use: https://ubiqy.jp/en/terms/ - Privacy Policy: https://ubiqy.jp/en/privacy/